diff options
| author | Eric Christopher <echristo@apple.com> | 2011-04-18 19:26:25 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@apple.com> | 2011-04-18 19:26:25 +0000 |
| commit | d574bb5a6ee6cbe4d2387e4fa7f7f5ab099ea05f (patch) | |
| tree | ed12398b9e95fd41961d5bb689e409b398ff7603 /lib/CodeGen/RegAllocFast.cpp | |
| parent | 3b55a372d4c457d65dadd9a04c2b2d310f1bab83 (diff) | |
Fix a bug where we were counting the alias sets as completely used
registers for fast allocation a different way. This has us updating
used registers only when we're using that exact register.
Fixes rdar://9207598
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129711 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/RegAllocFast.cpp')
| -rw-r--r-- | lib/CodeGen/RegAllocFast.cpp | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/lib/CodeGen/RegAllocFast.cpp b/lib/CodeGen/RegAllocFast.cpp index 7bb849ef54..93e3adc3c7 100644 --- a/lib/CodeGen/RegAllocFast.cpp +++ b/lib/CodeGen/RegAllocFast.cpp @@ -396,7 +396,6 @@ void RAFast::definePhysReg(MachineInstr *MI, unsigned PhysReg, PhysRegState[PhysReg] = NewState; for (const unsigned *AS = TRI->getAliasSet(PhysReg); unsigned Alias = *AS; ++AS) { - UsedInInstr.set(Alias); switch (unsigned VirtReg = PhysRegState[Alias]) { case regDisabled: break; @@ -734,10 +733,6 @@ void RAFast::handleThroughOperands(MachineInstr *MI, if (!Reg || !TargetRegisterInfo::isPhysicalRegister(Reg)) continue; DEBUG(dbgs() << "\tSetting reg " << Reg << " as used in instr\n"); UsedInInstr.set(Reg); - for (const unsigned *AS = TRI->getAliasSet(Reg); *AS; ++AS) { - DEBUG(dbgs() << "\tSetting alias reg " << *AS << " as used in instr\n"); - UsedInInstr.set(*AS); - } } // Also mark PartialDefs as used to avoid reallocation. |